beetlephoto wrote:
lostinjapan wrote
carstenw wrote
Interesting. On my A7 the lens works pretty well, but I would like to improve it a bit. I will try the plugin. Any tips for making a profile? It took me a lot of trial and error before I was able to make a good profile for the lens, The instructions for the Flat Field plug in say you need to create a new profile for each lighting condition and aperture setting. I never found that to be necessary.
What worked for me to take a large plain white sheet of paper and set it up the shade with no direct lighting or shadows falling on it. Then I focused the lens at 1meter at F/8 and overexpose the image by two stops. (I tried everything from 0 to 4 stops, but two worked the best). After imported into LR, it has to be converted to DNG to use the plug in. Once it was in LR, I adjusted the brightness to just below clipping, cleaned up any a few dust spots and set the white balance to get the image as close to a natural white as possible. Then I exported it as another DNG file to use only with the FF plugin.
Works perfectly for me. When I use the CV12mm I found it works best if I just set it on F/8 and set the focus point at about 1m. Essentially everything is in focus from 30cm to forever. I am quite happy with the results on the A7r, it is wonderful lens.
Hope it helps.
Ryan Interesting. Could you post some full size examples with the A7r with the settings you describe (f/8, focus at 1m), please?
Thanks!!!!
Sure I will post them in the morning. It is well past midnight here and my brain is no longer working.
Cheers.
Ryan